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pl23_theb1634.jpg

Heliotrope being used in western United States

Image

Download ( 335 KB )

Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb1634jpg

Description

Heliotrope being used in western United States

Credit

NOAA, B.A. Colonna Album

Display Date

1878?

Location

Western United States

Collection

Historic Coast & Geodetic Survey

Geodesy

Triangulation

Heliotropes & Signal Lamps

Keywords

Geodesy

Triangulation

Lights

Helio